Name: Jake Rutkowitz
Age: 9
Height: 4’5″
Weight: 57 lbs
Best BMX Moment so far this year: riding with my friends and Riding the jumps at swampfest
Do you have any advice for kids buying their first BMX? Listen to your dad.
What size Bike did you start on? Cult 12 inch
How long have you been riding BMX? Since I was 3
Favourite type of riding? (Park, Trails, Street…) trails and park
Funnest trick? Nac nacs
Favorite places to ride? Catty woods, Woodward east
Pro BMXer that gets you stoked? Trey Jones!

BMX Bike Details

Frame: fbm gypsy 16.5tt
Fork: fbm cb4ks
Bars: fbm
Stem / Reach: Merritt topload
Grips: Merritt Sawyers
Bar ends: Merritt
Cranks (and crank arm length): Profile mini magnutanium Cranks 145mm
Sprocket (and number of teeth): Merritt mighty 28t
Chain: kmc 710
Front Tire: Sunday 16×2.10
Front Wheel: sun ryno lite rim 36h
Front Hub: profile elite 36h
Rear Tire: Haro multi surface 16×2.0
Rear Wheel: sun ryno lite
Rear Hub: profile elite 9t 36h
Pedals: Merritt P1
Pegs: (sometimes) Merritt SIR
Brakes: stock off my old United supreme
Any other special details or stories about your bike or parts? I have a huge dent in my chain stay from my first ride at Woodward with this frame. I jumped the channel gap down into the bank, but I was going way to slow and cased/feebled the landing..I was very upset
Shout outs or thanks? Big thanks to Merritt, Hok9, and the clifton bike shop.

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10 year old Lennox Zimmermann’s last days on his 16″ BMX. Hit play.

Filmed and edited by Noah Kolbe

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What size BMX Bike should I ride?

We’ve tracked some of the raddest BMX Groms in the world, as they’ve progressed, grown and moved from one bike size to another. These are the bike sizes that these shredders are most comfortable riding and if you want to progress like they are, have fun and stay safer – take a serious look at this BMX bike sizing guide.

Thanks to the many kids and parents, who have provided the input to help make this guide possible. One of the number one reasons – maybe the number one reason – for younger riders getting discouraged and quitting BMX, is being bought a bike for them to “grow into”. Get a bike the right size – not one to grow into!

Tips on transitioning from one size to the next.

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Nahum lays down a perfect tabletop air on an 18″ Sunday Radocaster build. The Radocaster shares its proven geometry with the Sunday Primers.

The 2016 16″ and 18″ Sunday Primers are once again a perfect choices for younger shredders. In the past we’ve tested the Sunday Primers at BMX Groms and the Sunday Radocaster frame – which shares the same geometry – and been impressed.

Our Sunday Radocaster “Hands On” Review

Our Sunday Primer 16 and 18 Inch “Hands On” Review

Geometry

Sunday has taken the younger age group of riders seriously and developed it’s 16 and 18 inch frame geometry to feel the same as a 20″ BMX would to a larger rider. Last year when we tested the Radocaster frame we noticed our test rider progressing in some areas, within an hour of switching to the frame. Tricks such as half-cabs, 360’s and 540’s, higher hops and popping up into manuals are easier.

Highlights

Highlights include: the frame and forks feature cromo dropouts, they come with cromo cranks featuring mid sealed bottom brackets, seat/seatpost combos and Odyssey brakes.

The 16″ comes with a 16″ specific brake lever for those smaller hands, a 40mm reach top load stem and this year the 16″ comes with Sunday Current tires.

The 18″ comes with a Sunday Freeze frontload stem and Sunday cornerstone grips.

The stock Primers will be more than strong enough for most riders in the age range for these bikes. However if you get to the point you want to upgrade the 18″, you could buy the Sunday Radocaster full cromo frame and fork set, switch it up and you wouldn’t even have to get used to a new bike – the geometry is the same.

Verdict

If you’re thinking of purchasing a new bike and you like the Primers, BMX Grom’s verdict is: “Choose the right size and send it!”

Getting the right size bike is really important and Sunday has taken things a step further with their proportional geometry.

Specifications

PRIMER 16″ (Watermelon Green)

FRAME: 16.5” TT, Chromoly dropouts
FORK: 16” fork with 2PC Steerer tube, Chromoly dropout
HANDLEBAR: Primer 16 23” Width, 6.8” Rise, 12° Back, 1° Upsweep
STEM: Sunday Top-Load Stem 40mm
HEADSET: Sunday Sealed Integrated
HEADSET CAP: Sunday M6 AL Pre-Load Bolt
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
BRAKE LEVER: Sunday 16″ specific
GRIPS: Junior
SEAT: Junior Seat and Post combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday, 25T, steel
CRANKS: 140mm, 3-piece, Chromoly RHD
BB PARTS: 19mm sealed Mid
PEDALS: Wellgo Jr Plastic
RIMS: 16” rim, 20H
FRONT HUB: Sunday, 20H, Low-flange, Loose-ball
REAR HUB: Sunday, 20H, Semi-Sealed, 10T
SPOKES: Steel Black
TIRES: Sunday Current 16 x 2.1 (F & R)
CHAIN: KMC Z-410

PRIMER 18″

FRAME: 18.5” TT, Chromoly dropouts
FORK: 18 fork with 2PC Steerer tube, Chromoly dropouts
HANDLEBAR: Primer 18 25.5” Width, 7.65” Rise, 12° Back, 1° Upsweep
STEM: Sunday Front-Load Stem 48mm
HEADSET: Sunday Sealed Integrated
HEADSET CAP: Sunday M6 AL Pre-Load Bolt
BRAKE: Odyssey Springfield
BRAKE CABLE: Odyssey Quik Slic
BRAKE LEVER: Odyssey Springfield
GRIPS: Sunday Cornerstone
SEAT: Sunday Cloud Seat and Post combo
SEAT POST: Integrated
SEAT CLAMP: Sunday
SPROCKET: Sunday, 25T, steel
CRANKS: 155mm, 3-piece, Chromoly RHD
BB PARTS: 19mm sealed Mid
PEDALS: Sunday Plastic
RIMS: 18” rim, 28H
FRONT HUB: Sunday, 28H, Low-flange, Loose-ball
REAR HUB: Sunday, 28H, Semi-Sealed, 9T
SPOKES: Steel Black
TIRES: Innova 18 x 2.1 (F & R)
CHAIN: KMC Z-410

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2016 Subrosa Atlus Balance bike

First up is the 2016 Subrosa Atlus Balance bike. The Subrosa 2016 Balance is designed to give a young rider the confidence to balance on their own and then be able to ride a bike with a drive train without ever riding training wheels. The bike is decked out with Subrosa’s Maze seat, a Rant sealed headset, soft rubber grips, and a head-tube badge.

2016 Subrosa Atlus 16″ BMX Bike

Next is the 2016 Subrosa Atlus 16″ BMX Bike. It is designed with a younger beginner level rider in mind and features a double gusseted frame, Rant chromoly tubular 3pc cranks, 14mm semi sealed Rant Cassette Hub with 9T driver, Subrosa “Maze” Seat, Shadow “Chula” DCR Grips, Shadow “Alfred” Clamp and Rant PC Pedals.

 2016 Subrosa SALVADOR 18″ BMX Bike

Finally we have the 2016 Subrosa SALVADOR 18″ BMX Bike. This 18″ looks super good and features a Subrosa “Uplift” Stem, Subrosa “Crest” Seat, Shadow “Chula” DCR Grips, Shadow “Alfred” Clamp, Rant Sealed Hubs.

For more information and specs on all these bikes head over to www.subrosabrand.com

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